Finding the Fourth Proportional to 258,906.96, 357,401.72 and 174,073.20

Step by Step Solution

1. Step 1: Write the proportion equation
   258,906.96 : 357,401.72 = 174,073.20 : x
2. Step 2: Convert to fraction form
   258,906.96/357,401.72 = 174,073.20/x
3. Step 3: Cross multiply
   258,906.96x = 357,401.72 × 174,073.20
4. Step 4: Simplify right side
   258,906.96x = 62,214,061,085.90
5. Step 5: Solve for x
   x = 62,214,061,085.90/258,906.96
6. Step 6: Final answer
   x = 240,295.05